services/provisioning-service/src/main/java/com/epam/datalab/backendapi/resources/ImageResource.java
/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package com.epam.datalab.backendapi.resources;

import com.epam.datalab.auth.UserInfo;
import com.epam.datalab.backendapi.core.Directories;
import com.epam.datalab.backendapi.core.commands.DockerAction;
import com.epam.datalab.backendapi.core.commands.DockerCommands;
import com.epam.datalab.backendapi.core.commands.RunDockerCommand;
import com.epam.datalab.backendapi.core.response.handlers.ImageCreateCallbackHandler;
import com.epam.datalab.backendapi.service.impl.DockerService;
import com.epam.datalab.cloud.CloudProvider;
import com.epam.datalab.dto.exploratory.ExploratoryImageDTO;
import com.epam.datalab.rest.contracts.ExploratoryAPI;
import com.fasterxml.jackson.core.JsonProcessingException;
import io.dropwizard.auth.Auth;
import lombok.extern.slf4j.Slf4j;

import javax.ws.rs.Consumes;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import java.util.Objects;

@Path(ExploratoryAPI.EXPLORATORY_IMAGE)
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
@Slf4j
public class ImageResource extends DockerService implements DockerCommands {

    @POST
    public Response createImage(@Auth UserInfo ui, ExploratoryImageDTO image) throws JsonProcessingException {
        final String uuid = DockerCommands.generateUUID();

        folderListenerExecutor.start(configuration.getImagesDirectory(), configuration.getResourceStatusPollTimeout(),
                new ImageCreateCallbackHandler(selfService, uuid, DockerAction.CREATE_IMAGE, image));
        String command = commandBuilder.buildCommand(getDockerCommand(DockerAction.CREATE_IMAGE, uuid, image), image);
        commandExecutor.executeAsync(ui.getName(), uuid, command);
        log.debug("Docker command: " + command);
        return Response.accepted(uuid).build();
    }

    @POST
    @Path("/terminate")
    public Response terminateImage(@Auth UserInfo ui, ExploratoryImageDTO image) throws JsonProcessingException{
        final String uuid = DockerCommands.generateUUID();

        folderListenerExecutor.start(configuration.getImagesDirectory(), configuration.getResourceStatusPollTimeout(),
                new ImageCreateCallbackHandler(selfService, uuid, DockerAction.TERMINATE_IMAGE, image));
        String command = commandBuilder.buildCommand(getDockerCommand(DockerAction.TERMINATE_IMAGE, uuid, image), image);
        commandExecutor.executeAsync(ui.getName(), uuid, command);
        log.debug("Docker command: " + command);
        return Response.accepted(uuid).build();
    }

    @Override
    public String getResourceType() {
        return Directories.NOTEBOOK_LOG_DIRECTORY;
    }

    private RunDockerCommand getDockerCommand(DockerAction action, String uuid, ExploratoryImageDTO image) {
        RunDockerCommand runDockerCommand = new RunDockerCommand()
                .withInteractive()
                .withVolumeForRootKeys(configuration.getKeyDirectory())
                .withVolumeForResponse(configuration.getImagesDirectory())
                .withVolumeForLog(configuration.getDockerLogDirectory(), getResourceType())
                .withRequestId(uuid)
                .withConfKeyName(configuration.getAdminKey())
                .withAction(action)
                .withResource(getResourceType())
                .withImage(image.getNotebookImage())
                .withName(nameContainer(image.getEdgeUserName(), action.toString(), image.getImageName()));
        if (configuration.getCloudProvider() == CloudProvider.AZURE &&
                Objects.nonNull(configuration.getCloudConfiguration().getAzureAuthFile()) &&
                !configuration.getCloudConfiguration().getAzureAuthFile().isEmpty()) {
            runDockerCommand.withVolumeFoAzureAuthFile(configuration.getCloudConfiguration().getAzureAuthFile());
        }

        return runDockerCommand;
    }
}
